samd: Add new port to Microchip SAMDxx microcontrollers.
Initially supporting SAMD21 and SAMD51.
This commit is contained in:
Damien George
parent
f073f2b543
commit
5f9bd11527
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@ -0,0 +1,100 @@
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BOARD ?= ADAFRUIT_ITSYBITSY_M4_EXPRESS
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BOARD_DIR ?= boards/$(BOARD)
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BUILD ?= build-$(BOARD)
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CROSS_COMPILE ?= arm-none-eabi-
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UF2CONV ?= $(TOP)/tools/uf2conv.py
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ifeq ($(wildcard $(BOARD_DIR)/.),)
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$(error Invalid BOARD specified: $(BOARD_DIR))
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endif
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include ../../py/mkenv.mk
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include $(BOARD_DIR)/board.mk
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# Qstr definitions (must come before including py.mk)
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QSTR_DEFS = qstrdefsport.h
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QSTR_GLOBAL_DEPENDENCIES = $(BOARD_DIR)/mpconfigboard.h
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# Include py core make definitions
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include $(TOP)/py/py.mk
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INC += -I.
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INC += -I$(TOP)
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INC += -I$(BUILD)
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INC += -I$(BOARD_DIR)
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INC += -I$(TOP)/lib/cmsis/inc
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INC += -I$(TOP)/lib/asf4/$(shell echo $(MCU_SERIES) | tr '[:upper:]' '[:lower:]')/include
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INC += -I$(TOP)/lib/tinyusb/src
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CFLAGS_MCU_SAMD21 = -mtune=cortex-m0plus -mcpu=cortex-m0plus -msoft-float
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CFLAGS_MCU_SAMD51 = -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
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CFLAGS = $(INC) -Wall -Werror -std=c99 -nostdlib -mthumb $(CFLAGS_MCU_$(MCU_SERIES)) -fsingle-precision-constant -Wdouble-promotion
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CFLAGS += -DMCU_$(MCU_SERIES) -D__$(CMSIS_MCU)__
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LDFLAGS = -nostdlib $(addprefix -T,$(LD_FILES)) -Map=$@.map --cref
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LIBS = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
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# Tune for Debugging or Optimization
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ifeq ($(DEBUG),1)
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CFLAGS += -O0 -ggdb
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else
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CFLAGS += -Os -DNDEBUG
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LDFLAGS += --gc-sections
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CFLAGS += -fdata-sections -ffunction-sections
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endif
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SRC_C = \
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main.c \
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modutime.c \
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modmachine.c \
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mphalport.c \
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samd_isr.c \
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samd_soc.c \
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tusb_port.c \
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lib/libc/string0.c \
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lib/libm/ef_sqrt.c \
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lib/libm/fmodf.c \
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lib/libm/math.c \
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lib/libm/nearbyintf.c \
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lib/mp-readline/readline.c \
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lib/tinyusb/src/class/cdc/cdc_device.c \
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lib/tinyusb/src/common/tusb_fifo.c \
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lib/tinyusb/src/device/usbd.c \
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lib/tinyusb/src/device/usbd_control.c \
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lib/tinyusb/src/tusb.c \
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lib/utils/printf.c \
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lib/utils/pyexec.c \
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lib/utils/stdout_helpers.c \
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ifeq ($(MCU_SERIES),SAMD21)
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SRC_C += lib/tinyusb/src/portable/microchip/samd21/dcd_samd21.c
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SRC_S = lib/utils/gchelper_m0.s
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else
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SRC_C += lib/tinyusb/src/portable/microchip/samd51/dcd_samd51.c
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SRC_S = lib/utils/gchelper_m3.s
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endif
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# List of sources for qstr extraction
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SRC_QSTR += modutime.c modmachine.c
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OBJ += $(PY_O)
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OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
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OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
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# Workaround for bug in older gcc, warning on "static usbd_device_t _usbd_dev = { 0 };"
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$(BUILD)/lib/tinyusb/src/device/usbd.o: CFLAGS += -Wno-missing-braces
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all: $(BUILD)/firmware.uf2
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$(BUILD)/firmware.elf: $(OBJ)
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$(ECHO) "LINK $@"
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$(Q)$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
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$(Q)$(SIZE) $@
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$(BUILD)/firmware.bin: $(BUILD)/firmware.elf
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$(Q)$(OBJCOPY) -O binary -j .isr_vector -j .text -j .data $^ $(BUILD)/firmware.bin
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$(BUILD)/firmware.uf2: $(BUILD)/firmware.bin
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$(Q)$(PYTHON) $(UF2CONV) -b $(TEXT0) -c -o $@ $<
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include $(TOP)/py/mkrules.mk
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@ -0,0 +1,7 @@
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Port of MicroPython to Microchip SAMD MCUs
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==========================================
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Supports SAMD21 and SAMD51.
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Features:
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- REPL over USB VCP
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@ -0,0 +1,4 @@
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MCU_SERIES = SAMD51
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CMSIS_MCU = SAMD51G19A
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LD_FILES = $(BOARD_DIR)/link.ld sections.ld
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TEXT0 = 0x4000
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@ -0,0 +1,17 @@
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/*
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GNU linker script for SAMD51
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*/
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x00004000, LENGTH = 512K - 16K
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K
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}
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/* Top end of the stack, with room for double-tap variable */
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_estack = ORIGIN(RAM) + LENGTH(RAM) - 8;
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_sstack = _estack - 16K;
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_sheap = _ebss;
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_eheap = _sstack;
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@ -0,0 +1,7 @@
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#define MICROPY_HW_BOARD_NAME "ItsyBitsy M4 Express"
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#define MICROPY_HW_MCU_NAME "SAMD51G19A"
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#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
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#define MICROPY_PY_BUILTINS_COMPLEX (0)
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#define MICROPY_PY_MATH (0)
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#define MICROPY_PY_CMATH (0)
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@ -0,0 +1,4 @@
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MCU_SERIES = SAMD21
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CMSIS_MCU = SAMD21E18A
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LD_FILES = $(BOARD_DIR)/link.ld sections.ld
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TEXT0 = 0x2000
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@ -0,0 +1,17 @@
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/*
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GNU linker script for SAMD21
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*/
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x00002000, LENGTH = 256K - 8K
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
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}
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/* Top end of the stack, with room for double-tap variable */
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_estack = ORIGIN(RAM) + LENGTH(RAM) - 8;
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_sstack = _estack - 8K;
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_sheap = _ebss;
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_eheap = _sstack;
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@ -0,0 +1,2 @@
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#define MICROPY_HW_BOARD_NAME "Trinket M0"
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#define MICROPY_HW_MCU_NAME "SAMD21E18A"
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@ -0,0 +1,98 @@
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
|
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/compile.h"
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#include "py/runtime.h"
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#include "py/gc.h"
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#include "py/mperrno.h"
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#include "py/stackctrl.h"
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#include "lib/utils/gchelper.h"
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#include "lib/utils/pyexec.h"
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extern uint8_t _sstack, _estack, _sheap, _eheap;
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void samd_main(void) {
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mp_stack_set_top(&_estack);
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mp_stack_set_limit(&_estack - &_sstack - 1024);
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for (;;) {
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gc_init(&_sheap, &_eheap);
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mp_init();
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_path), 0);
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_));
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_argv), 0);
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for (;;) {
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if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
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if (pyexec_raw_repl() != 0) {
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break;
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}
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} else {
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if (pyexec_friendly_repl() != 0) {
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break;
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}
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}
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}
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mp_printf(MP_PYTHON_PRINTER, "MPY: soft reboot\n");
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gc_sweep_all();
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mp_deinit();
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}
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}
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void gc_collect(void) {
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gc_collect_start();
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uintptr_t regs[10];
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uintptr_t sp = gc_helper_get_regs_and_sp(regs);
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gc_collect_root((void**)sp, ((uintptr_t)MP_STATE_THREAD(stack_top) - sp) / sizeof(uint32_t));
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gc_collect_end();
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}
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mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
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mp_raise_OSError(MP_ENOENT);
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}
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mp_import_stat_t mp_import_stat(const char *path) {
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return MP_IMPORT_STAT_NO_EXIST;
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}
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mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
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void nlr_jump_fail(void *val) {
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for (;;) {
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}
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}
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#ifndef NDEBUG
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void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
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mp_printf(MP_PYTHON_PRINTER, "Assertion '%s' failed, at file %s:%d\n", expr, file, line);
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for(;;) {
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}
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}
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#endif
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@ -0,0 +1,12 @@
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#BOARD = TRINKET
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UF2DEV = /dev/sdb
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#UF2CONV = /home/damien/others/uf2/utils/uf2conv.py
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include Makefile
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deploy: $(BUILD)/firmware.uf2
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$(ECHO) "Copying $< to the board"
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mount $(UF2DEV)
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cat /mnt/INFO_UF2.TXT > /dev/null
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cp $< /mnt
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umount /mnt
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@ -0,0 +1,72 @@
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
|
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
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* furnished to do so, subject to the following conditions:
|
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*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "extmod/machine_mem.h"
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#include "samd_soc.h"
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#if defined(MCU_SAMD21)
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#define DBL_TAP_ADDR ((volatile uint32_t *)(0x20000000 + 32 * 1024 - 4))
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#elif defined(MCU_SAMD51)
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#define DBL_TAP_ADDR ((volatile uint32_t *)(0x20000000 + 192 * 1024 - 4))
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#endif
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#define DBL_TAP_MAGIC_LOADER 0xf01669ef
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#define DBL_TAP_MAGIC_RESET 0xf02669ef
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STATIC mp_obj_t machine_reset(void) {
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*DBL_TAP_ADDR = DBL_TAP_MAGIC_RESET;
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NVIC_SystemReset();
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);
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STATIC mp_obj_t machine_bootloader(void) {
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*DBL_TAP_ADDR = DBL_TAP_MAGIC_LOADER;
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NVIC_SystemReset();
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_bootloader_obj, machine_bootloader);
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STATIC mp_obj_t machine_freq(void) {
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return MP_OBJ_NEW_SMALL_INT(CPU_FREQ);
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_freq_obj, machine_freq);
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STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_umachine) },
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{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
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{ MP_ROM_QSTR(MP_QSTR_bootloader), MP_ROM_PTR(&machine_bootloader_obj) },
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{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);
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const mp_obj_module_t mp_module_machine = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t*)&machine_module_globals,
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};
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@ -0,0 +1,47 @@
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
|
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* The MIT License (MIT)
|
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*
|
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* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
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#include "extmod/utime_mphal.h"
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STATIC const mp_rom_map_elem_t time_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_utime) },
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{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_utime_sleep_obj) },
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{ MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_utime_sleep_ms_obj) },
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{ MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_utime_sleep_us_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_utime_ticks_ms_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_utime_ticks_us_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_utime_ticks_cpu_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_utime_ticks_add_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_utime_ticks_diff_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(time_module_globals, time_module_globals_table);
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const mp_obj_module_t mp_module_utime = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t*)&time_module_globals,
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};
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@ -0,0 +1,109 @@
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/*
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* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
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* The MIT License (MIT)
|
||||
*
|
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* Copyright (c) 2019 Damien P. George
|
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*
|
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
// Options controlling how MicroPython is built, overriding defaults in py/mpconfig.h
|
||||
|
||||
// Board specific definitions
|
||||
#include "mpconfigboard.h"
|
||||
|
||||
// Memory allocation policies
|
||||
#define MICROPY_GC_STACK_ENTRY_TYPE uint16_t
|
||||
#define MICROPY_GC_ALLOC_THRESHOLD (0)
|
||||
#define MICROPY_ALLOC_PARSE_CHUNK_INIT (32)
|
||||
#define MICROPY_ALLOC_PATH_MAX (256)
|
||||
#define MICROPY_QSTR_BYTES_IN_HASH (1)
|
||||
|
||||
// Compiler configuration
|
||||
#define MICROPY_COMP_CONST (0)
|
||||
|
||||
// Python internal features
|
||||
#define MICROPY_ENABLE_GC (1)
|
||||
#define MICROPY_KBD_EXCEPTION (1)
|
||||
#define MICROPY_HELPER_REPL (1)
|
||||
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_MPZ)
|
||||
#define MICROPY_ENABLE_SOURCE_LINE (1)
|
||||
#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_TERSE)
|
||||
#define MICROPY_CPYTHON_COMPAT (0)
|
||||
#define MICROPY_CAN_OVERRIDE_BUILTINS (1)
|
||||
|
||||
// Control over Python builtins
|
||||
#define MICROPY_PY_ASYNC_AWAIT (0)
|
||||
#define MICROPY_PY_BUILTINS_STR_COUNT (0)
|
||||
#define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
|
||||
#define MICROPY_PY_BUILTINS_SET (0)
|
||||
#define MICROPY_PY_BUILTINS_FROZENSET (0)
|
||||
#define MICROPY_PY_BUILTINS_PROPERTY (0)
|
||||
#define MICROPY_PY_BUILTINS_ENUMERATE (0)
|
||||
#define MICROPY_PY_BUILTINS_FILTER (0)
|
||||
#define MICROPY_PY_BUILTINS_REVERSED (0)
|
||||
#define MICROPY_PY_BUILTINS_MIN_MAX (0)
|
||||
#define MICROPY_PY___FILE__ (0)
|
||||
#define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
|
||||
#define MICROPY_PY_ARRAY_SLICE_ASSIGN (1)
|
||||
#define MICROPY_PY_ATTRTUPLE (0)
|
||||
#define MICROPY_PY_COLLECTIONS (0)
|
||||
#define MICROPY_PY_SYS_MAXSIZE (1)
|
||||
|
||||
// Extended modules
|
||||
#define MICROPY_PY_UTIME_MP_HAL (1)
|
||||
#define MICROPY_PY_MACHINE (1)
|
||||
|
||||
// Hooks to add builtins
|
||||
|
||||
#define MICROPY_PORT_BUILTINS \
|
||||
{ MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
|
||||
|
||||
extern const struct _mp_obj_module_t mp_module_machine;
|
||||
extern const struct _mp_obj_module_t mp_module_utime;
|
||||
|
||||
#define MICROPY_PORT_BUILTIN_MODULES \
|
||||
{ MP_ROM_QSTR(MP_QSTR_machine), MP_ROM_PTR(&mp_module_machine) }, \
|
||||
{ MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_utime) }, \
|
||||
|
||||
#define MICROPY_PORT_ROOT_POINTERS \
|
||||
const char *readline_hist[8];
|
||||
|
||||
#define MP_STATE_PORT MP_STATE_VM
|
||||
|
||||
// Miscellaneous settings
|
||||
|
||||
#define MICROPY_EVENT_POLL_HOOK \
|
||||
do { \
|
||||
extern void mp_handle_pending(void); \
|
||||
mp_handle_pending(); \
|
||||
__WFI(); \
|
||||
} while (0);
|
||||
|
||||
#define MICROPY_MAKE_POINTER_CALLABLE(p) ((void*)((mp_uint_t)(p) | 1))
|
||||
#define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
|
||||
|
||||
#define MP_SSIZE_MAX (0x7fffffff)
|
||||
typedef int mp_int_t; // must be pointer size
|
||||
typedef unsigned mp_uint_t; // must be pointer size
|
||||
typedef long mp_off_t;
|
||||
|
||||
// Need to provide a declaration/definition of alloca()
|
||||
#include <alloca.h>
|
||||
|
|
@ -0,0 +1,112 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "py/mpstate.h"
|
||||
#include "py/mphal.h"
|
||||
#include "lib/utils/interrupt_char.h"
|
||||
#include "samd_soc.h"
|
||||
#include "tusb.h"
|
||||
|
||||
#if MICROPY_KBD_EXCEPTION
|
||||
|
||||
void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char) {
|
||||
(void)itf;
|
||||
(void)wanted_char;
|
||||
tud_cdc_read_char(); // discard interrupt char
|
||||
mp_keyboard_interrupt();
|
||||
}
|
||||
|
||||
void mp_hal_set_interrupt_char(int c) {
|
||||
if (c != -1) {
|
||||
mp_obj_exception_clear_traceback(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)));
|
||||
}
|
||||
tud_cdc_set_wanted_char(c);
|
||||
}
|
||||
|
||||
void mp_keyboard_interrupt(void) {
|
||||
MP_STATE_VM(mp_pending_exception) = MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception));
|
||||
#if MICROPY_ENABLE_SCHEDULER
|
||||
if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
|
||||
MP_STATE_VM(sched_state) = MP_SCHED_PENDING;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
void mp_hal_delay_ms(mp_uint_t ms) {
|
||||
ms += 1;
|
||||
uint32_t t0 = systick_ms;
|
||||
while (systick_ms - t0 < ms) {
|
||||
MICROPY_EVENT_POLL_HOOK
|
||||
}
|
||||
}
|
||||
|
||||
void mp_hal_delay_us(mp_uint_t us) {
|
||||
uint32_t ms = us / 1000 + 1;
|
||||
uint32_t t0 = systick_ms;
|
||||
while (systick_ms - t0 < ms) {
|
||||
__WFI();
|
||||
}
|
||||
}
|
||||
|
||||
int mp_hal_stdin_rx_chr(void) {
|
||||
for (;;) {
|
||||
if (USARTx->USART.INTFLAG.bit.RXC) {
|
||||
return USARTx->USART.DATA.bit.DATA;
|
||||
}
|
||||
if (tud_cdc_connected() && tud_cdc_available()) {
|
||||
uint8_t buf[1];
|
||||
uint32_t count = tud_cdc_read(buf, sizeof(buf));
|
||||
if (count) {
|
||||
return buf[0];
|
||||
}
|
||||
}
|
||||
__WFI();
|
||||
}
|
||||
}
|
||||
|
||||
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
|
||||
if (tud_cdc_connected()) {
|
||||
for (size_t i = 0; i < len;) {
|
||||
uint32_t n = len - i;
|
||||
uint32_t n2 = tud_cdc_write(str + i, n);
|
||||
if (n2 < n) {
|
||||
while (!tud_cdc_write_flush()) {
|
||||
__WFI();
|
||||
}
|
||||
}
|
||||
i += n2;
|
||||
}
|
||||
while (!tud_cdc_write_flush()) {
|
||||
__WFI();
|
||||
}
|
||||
}
|
||||
while (len--) {
|
||||
while (!(USARTx->USART.INTFLAG.bit.DRE)) { }
|
||||
USARTx->USART.DATA.bit.DATA = *str++;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,39 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
#ifndef MICROPY_INCLUDED_SAMD_MPHALPORT_H
|
||||
#define MICROPY_INCLUDED_SAMD_MPHALPORT_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
extern volatile uint32_t systick_ms;
|
||||
|
||||
void mp_hal_set_interrupt_char(int c);
|
||||
|
||||
static inline mp_uint_t mp_hal_ticks_ms(void) { return systick_ms; }
|
||||
static inline mp_uint_t mp_hal_ticks_us(void) { return systick_ms * 1000; }
|
||||
static inline mp_uint_t mp_hal_ticks_cpu(void) { return 0; }
|
||||
|
||||
#endif // MICROPY_INCLUDED_SAMD_MPHALPORT_H
|
||||
|
|
@ -0,0 +1 @@
|
|||
// qstrs specific to this port
|
||||
|
|
@ -0,0 +1,252 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "samd_soc.h"
|
||||
|
||||
typedef void (*ISR)(void);
|
||||
|
||||
extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss;
|
||||
|
||||
const ISR isr_vector[];
|
||||
uint32_t systick_ms;
|
||||
|
||||
void Reset_Handler(void) __attribute__((naked));
|
||||
void Reset_Handler(void) {
|
||||
// Set stack pointer
|
||||
#if __CORTEX_M >= 0x03
|
||||
__asm volatile ("ldr sp, =_estack");
|
||||
#else
|
||||
__asm volatile ("ldr r0, =_estack");
|
||||
__asm volatile ("mov sp, r0");
|
||||
#endif
|
||||
// Copy .data section from flash to RAM
|
||||
for (uint32_t *src = &_sidata, *dest = &_sdata; dest < &_edata;) {
|
||||
*dest++ = *src++;
|
||||
}
|
||||
// Zero out .bss section
|
||||
for (uint32_t *dest = &_sbss; dest < &_ebss;) {
|
||||
*dest++ = 0;
|
||||
}
|
||||
|
||||
// When we get here: stack is initialised, bss is clear, data is copied
|
||||
|
||||
#if __FPU_PRESENT == 1 && __FPU_USED == 1
|
||||
// Set CP10 and CP11 Full Access
|
||||
SCB->CPACR |= (3UL << 10 * 2) | (3UL << 11 * 2);
|
||||
#endif
|
||||
|
||||
// SCB->VTOR
|
||||
*((volatile uint32_t*)0xe000ed08) = (uint32_t)&isr_vector;
|
||||
|
||||
// SCB->CCR: enable 8-byte stack alignment for IRQ handlers, in accord with EABI
|
||||
*((volatile uint32_t*)0xe000ed14) |= 1 << 9;
|
||||
|
||||
// Initialise the cpu and peripherals
|
||||
samd_init();
|
||||
|
||||
// Now that we have a basic system up and running we can call main
|
||||
samd_main();
|
||||
|
||||
// we must not return
|
||||
for (;;) {
|
||||
}
|
||||
}
|
||||
|
||||
void Default_Handler(void) {
|
||||
for (;;) {
|
||||
}
|
||||
}
|
||||
|
||||
void SysTick_Handler(void) {
|
||||
systick_ms += 1;
|
||||
}
|
||||
|
||||
const ISR isr_vector[] __attribute__((section(".isr_vector"))) = {
|
||||
(ISR)&_estack,
|
||||
&Reset_Handler,
|
||||
&Default_Handler, // NMI_Handler
|
||||
&Default_Handler, // HardFault_Handler
|
||||
&Default_Handler, // MemManage_Handler
|
||||
&Default_Handler, // BusFault_Handler
|
||||
&Default_Handler, // UsageFault_Handler
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
&Default_Handler, // SVC_Handler
|
||||
&Default_Handler, // DebugMon_Handler
|
||||
0,
|
||||
&Default_Handler, // PendSV_Handler
|
||||
&SysTick_Handler, // SysTick_Handler
|
||||
0, // line 0
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
#if defined(MCU_SAMD21)
|
||||
USB_Handler_wrapper, // line 7
|
||||
#else
|
||||
0,
|
||||
#endif
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
#if defined(MCU_SAMD51)
|
||||
&USB_0_Handler_wrapper, // line 80
|
||||
&USB_1_Handler_wrapper,
|
||||
&USB_2_Handler_wrapper,
|
||||
&USB_3_Handler_wrapper,
|
||||
#else
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
#endif
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
};
|
||||
|
|
@ -0,0 +1,152 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "samd_soc.h"
|
||||
#include "tusb.h"
|
||||
|
||||
static void uart0_init(void) {
|
||||
#if defined(MCU_SAMD21)
|
||||
|
||||
// SERCOM0, TX=PA06=PAD2, RX=PA07=PAD3, ALT-D
|
||||
PORT->Group[0].PMUX[3].reg = 0x33;
|
||||
PORT->Group[0].PINCFG[6].reg = 1;
|
||||
PORT->Group[0].PINCFG[7].reg = 1;
|
||||
|
||||
PM->APBCMASK.bit.SERCOM0_ = 1;
|
||||
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_SERCOM0_CORE;
|
||||
while (GCLK->STATUS.bit.SYNCBUSY) { }
|
||||
|
||||
uint32_t rxpo = 3;
|
||||
uint32_t txpo = 1;
|
||||
|
||||
#elif defined(MCU_SAMD51)
|
||||
|
||||
// SERCOM3, TX=PA17=PAD0, RX=PA16=PAD1, ALT-D
|
||||
PORT->Group[0].PMUX[8].reg = 0x33;
|
||||
PORT->Group[0].PINCFG[16].reg = 1;
|
||||
PORT->Group[0].PINCFG[17].reg = 1;
|
||||
|
||||
// Use Generator 0 which is already enabled and switched to DFLL @ 48MHz
|
||||
GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg = GCLK_PCHCTRL_CHEN | GCLK_PCHCTRL_GEN_GCLK0;
|
||||
MCLK->APBBMASK.bit.SERCOM3_ = 1;
|
||||
|
||||
uint32_t rxpo = 1;
|
||||
uint32_t txpo = 2;
|
||||
|
||||
#endif
|
||||
|
||||
while (USARTx->USART.SYNCBUSY.bit.SWRST) { }
|
||||
USARTx->USART.CTRLA.bit.SWRST = 1;
|
||||
while (USARTx->USART.SYNCBUSY.bit.SWRST) { }
|
||||
|
||||
USARTx->USART.CTRLA.reg =
|
||||
SERCOM_USART_CTRLA_DORD
|
||||
| SERCOM_USART_CTRLA_RXPO(rxpo)
|
||||
| SERCOM_USART_CTRLA_TXPO(txpo)
|
||||
| SERCOM_USART_CTRLA_MODE(1)
|
||||
;
|
||||
USARTx->USART.CTRLB.reg = SERCOM_USART_CTRLB_RXEN | SERCOM_USART_CTRLB_TXEN;
|
||||
while (USARTx->USART.SYNCBUSY.bit.CTRLB) { }
|
||||
#if CPU_FREQ == 8000000
|
||||
uint32_t baud = 50437; // 115200 baud; 65536*(1 - 16 * 115200/8e6)
|
||||
#elif CPU_FREQ == 48000000
|
||||
uint32_t baud = 63019; // 115200 baud; 65536*(1 - 16 * 115200/48e6)
|
||||
#elif CPU_FREQ == 120000000
|
||||
uint32_t baud = 64529; // 115200 baud; 65536*(1 - 16 * 115200/120e6)
|
||||
#endif
|
||||
USARTx->USART.BAUD.bit.BAUD = baud;
|
||||
USARTx->USART.CTRLA.bit.ENABLE = 1;
|
||||
while (USARTx->USART.SYNCBUSY.bit.ENABLE) { }
|
||||
}
|
||||
|
||||
static void usb_init(void) {
|
||||
// Init USB clock
|
||||
#if defined(MCU_SAMD21)
|
||||
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_ID_USB;
|
||||
PM->AHBMASK.bit.USB_ = 1;
|
||||
PM->APBBMASK.bit.USB_ = 1;
|
||||
uint8_t alt = 6; // alt G, USB
|
||||
#elif defined(MCU_SAMD51)
|
||||
GCLK->PCHCTRL[USB_GCLK_ID].reg = GCLK_PCHCTRL_CHEN | GCLK_PCHCTRL_GEN_GCLK1;
|
||||
while (GCLK->PCHCTRL[USB_GCLK_ID].bit.CHEN == 0) { }
|
||||
MCLK->AHBMASK.bit.USB_ = 1;
|
||||
MCLK->APBBMASK.bit.USB_ = 1;
|
||||
uint8_t alt = 7; // alt H, USB
|
||||
#endif
|
||||
|
||||
// Init USB pins
|
||||
PORT->Group[0].DIRSET.reg = 1 << 25 | 1 << 24;
|
||||
PORT->Group[0].OUTCLR.reg = 1 << 25 | 1 << 24;
|
||||
PORT->Group[0].PMUX[12].reg = alt << 4 | alt;
|
||||
PORT->Group[0].PINCFG[24].reg = PORT_PINCFG_PMUXEN;
|
||||
PORT->Group[0].PINCFG[25].reg = PORT_PINCFG_PMUXEN;
|
||||
|
||||
tusb_init();
|
||||
}
|
||||
|
||||
void samd_init(void) {
|
||||
#if defined(MCU_SAMD21)
|
||||
|
||||
NVMCTRL->CTRLB.bit.MANW = 1; // errata "Spurious Writes"
|
||||
NVMCTRL->CTRLB.bit.RWS = 1; // 1 read wait state for 48MHz
|
||||
|
||||
// Enable DFLL48M
|
||||
SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_ENABLE;
|
||||
while (!SYSCTRL->PCLKSR.bit.DFLLRDY) {}
|
||||
SYSCTRL->DFLLMUL.reg = SYSCTRL_DFLLMUL_CSTEP(1) | SYSCTRL_DFLLMUL_FSTEP(1)
|
||||
| SYSCTRL_DFLLMUL_MUL(48000);
|
||||
uint32_t coarse = (*((uint32_t*)FUSES_DFLL48M_COARSE_CAL_ADDR) & FUSES_DFLL48M_COARSE_CAL_Msk)
|
||||
>> FUSES_DFLL48M_COARSE_CAL_Pos;
|
||||
if (coarse == 0x3f) {
|
||||
coarse = 0x1f;
|
||||
}
|
||||
uint32_t fine = 512;
|
||||
SYSCTRL->DFLLVAL.reg = SYSCTRL_DFLLVAL_COARSE(coarse) | SYSCTRL_DFLLVAL_FINE(fine);
|
||||
SYSCTRL->DFLLCTRL.reg = SYSCTRL_DFLLCTRL_CCDIS | SYSCTRL_DFLLCTRL_USBCRM
|
||||
| SYSCTRL_DFLLCTRL_MODE | SYSCTRL_DFLLCTRL_ENABLE;
|
||||
while (!SYSCTRL->PCLKSR.bit.DFLLRDY) {}
|
||||
|
||||
GCLK->GENDIV.reg = GCLK_GENDIV_ID(0) | GCLK_GENDIV_DIV(1);
|
||||
GCLK->GENCTRL.reg = GCLK_GENCTRL_GENEN | GCLK_GENCTRL_SRC_DFLL48M | GCLK_GENCTRL_ID(0);
|
||||
while (GCLK->STATUS.bit.SYNCBUSY) { }
|
||||
|
||||
// Configure PA10 as output for LED
|
||||
PORT->Group[0].DIRSET.reg = 1 << 10;
|
||||
|
||||
#elif defined(MCU_SAMD51)
|
||||
|
||||
GCLK->GENCTRL[1].reg = 1 << GCLK_GENCTRL_DIV_Pos | GCLK_GENCTRL_GENEN | GCLK_GENCTRL_SRC_DFLL;
|
||||
while (GCLK->SYNCBUSY.bit.GENCTRL1) { }
|
||||
|
||||
// Configure PA22 as output for LED
|
||||
PORT->Group[0].DIRSET.reg = 1 << 22;
|
||||
|
||||
#endif
|
||||
|
||||
SysTick_Config(CPU_FREQ / 1000);
|
||||
uart0_init();
|
||||
usb_init();
|
||||
}
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
#ifndef MICROPY_INCLUDED_SAMD_SAMD_SOC_H
|
||||
#define MICROPY_INCLUDED_SAMD_SAMD_SOC_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include "sam.h"
|
||||
|
||||
#if defined(MCU_SAMD21)
|
||||
|
||||
#define CPU_FREQ (48000000)
|
||||
#define USARTx SERCOM0
|
||||
|
||||
#elif defined(MCU_SAMD51)
|
||||
|
||||
#define CPU_FREQ (48000000)
|
||||
#define USARTx SERCOM3
|
||||
|
||||
#endif
|
||||
|
||||
void samd_init(void);
|
||||
void samd_main(void);
|
||||
|
||||
void USB_Handler_wrapper(void);
|
||||
void USB_0_Handler_wrapper(void);
|
||||
void USB_1_Handler_wrapper(void);
|
||||
void USB_2_Handler_wrapper(void);
|
||||
void USB_3_Handler_wrapper(void);
|
||||
|
||||
#endif // MICROPY_INCLUDED_SAMD_SAMD_SOC_H
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
/* Define output sections */
|
||||
SECTIONS
|
||||
{
|
||||
.text :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
KEEP(*(.isr_vector))
|
||||
*(.text)
|
||||
*(.text*)
|
||||
*(.rodata)
|
||||
*(.rodata*)
|
||||
. = ALIGN(4);
|
||||
_etext = .;
|
||||
_sidata = _etext;
|
||||
} >FLASH
|
||||
|
||||
.data : AT ( _sidata )
|
||||
{
|
||||
. = ALIGN(4);
|
||||
_sdata = .;
|
||||
*(.data)
|
||||
*(.data*)
|
||||
. = ALIGN(4);
|
||||
_edata = .;
|
||||
} >RAM
|
||||
|
||||
.bss :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
_sbss = .;
|
||||
*(.bss)
|
||||
*(.bss*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
_ebss = .;
|
||||
} >RAM
|
||||
}
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
#ifndef MICROPY_INCLUDED_SAMD_TUSB_CONFIG_H
|
||||
#define MICROPY_INCLUDED_SAMD_TUSB_CONFIG_H
|
||||
|
||||
// Common configuration
|
||||
|
||||
#if defined(MCU_SAMD21)
|
||||
#define CFG_TUSB_MCU OPT_MCU_SAMD21
|
||||
#elif defined(MCU_SAMD51)
|
||||
#define CFG_TUSB_MCU OPT_MCU_SAMD51
|
||||
#endif
|
||||
#define CFG_TUSB_RHPORT0_MODE OPT_MODE_DEVICE
|
||||
#define CFG_TUSB_MEM_SECTION
|
||||
#define CFG_TUSB_MEM_ALIGN TU_ATTR_ALIGNED(4)
|
||||
|
||||
// Device configuration
|
||||
|
||||
#define CFG_TUD_ENDOINT0_SIZE (64)
|
||||
#define CFG_TUD_CDC (1)
|
||||
#define CFG_TUD_CDC_RX_BUFSIZE (64)
|
||||
#define CFG_TUD_CDC_TX_BUFSIZE (64)
|
||||
|
||||
#endif // MICROPY_INCLUDED_SAMD_TUSB_CONFIG_H
|
||||
|
|
@ -0,0 +1,146 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2019 Damien P. George
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "samd_soc.h"
|
||||
#include "tusb.h"
|
||||
|
||||
#define USBD_VID (0xf055)
|
||||
#define USBD_PID (0x9802)
|
||||
|
||||
#define USBD_DESC_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN)
|
||||
#define USBD_MAX_POWER_MA (250)
|
||||
|
||||
#define USBD_ITF_CDC (0) // needs 2 interfaces
|
||||
#define USBD_ITF_MAX (2)
|
||||
|
||||
#define USBD_CDC_EP_CMD (0x81)
|
||||
#define USBD_CDC_EP_OUT (0x02)
|
||||
#define USBD_CDC_EP_IN (0x82)
|
||||
#define USBD_CDC_CMD_MAX_SIZE (8)
|
||||
|
||||
#define USBD_STR_0 (0x00)
|
||||
#define USBD_STR_MANUF (0x01)
|
||||
#define USBD_STR_PRODUCT (0x02)
|
||||
#define USBD_STR_SERIAL (0x03)
|
||||
#define USBD_STR_CDC (0x04)
|
||||
|
||||
// Note: descriptors returned from callbacks must exist long enough for transfer to complete
|
||||
|
||||
static const tusb_desc_device_t usbd_desc_device = {
|
||||
.bLength = sizeof(tusb_desc_device_t),
|
||||
.bDescriptorType = TUSB_DESC_DEVICE,
|
||||
.bcdUSB = 0x0200,
|
||||
.bDeviceClass = TUSB_CLASS_MISC,
|
||||
.bDeviceSubClass = MISC_SUBCLASS_COMMON,
|
||||
.bDeviceProtocol = MISC_PROTOCOL_IAD,
|
||||
.bMaxPacketSize0 = CFG_TUD_ENDOINT0_SIZE,
|
||||
.idVendor = USBD_VID,
|
||||
.idProduct = USBD_PID,
|
||||
.bcdDevice = 0x0100,
|
||||
.iManufacturer = USBD_STR_MANUF,
|
||||
.iProduct = USBD_STR_PRODUCT,
|
||||
.iSerialNumber = USBD_STR_SERIAL,
|
||||
.bNumConfigurations = 1,
|
||||
};
|
||||
|
||||
static const uint8_t usbd_desc_cfg[USBD_DESC_LEN] = {
|
||||
TUD_CONFIG_DESCRIPTOR(USBD_ITF_MAX, USBD_STR_0, USBD_DESC_LEN,
|
||||
TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, USBD_MAX_POWER_MA),
|
||||
|
||||
TUD_CDC_DESCRIPTOR(USBD_ITF_CDC, USBD_STR_CDC, USBD_CDC_EP_CMD,
|
||||
USBD_CDC_CMD_MAX_SIZE, USBD_CDC_EP_OUT, USBD_CDC_EP_IN, CFG_TUD_CDC_RX_BUFSIZE),
|
||||
};
|
||||
|
||||
static const char *const usbd_desc_str[] = {
|
||||
[USBD_STR_MANUF] = "MicroPython",
|
||||
[USBD_STR_PRODUCT] = "Board in FS mode",
|
||||
[USBD_STR_SERIAL] = "000000000000", // TODO
|
||||
[USBD_STR_CDC] = "Board CDC",
|
||||
};
|
||||
|
||||
const uint8_t *tud_descriptor_device_cb(void) {
|
||||
return (const uint8_t*)&usbd_desc_device;
|
||||
}
|
||||
|
||||
const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
|
||||
(void)index;
|
||||
return usbd_desc_cfg;
|
||||
}
|
||||
|
||||
const uint16_t *tud_descriptor_string_cb(uint8_t index) {
|
||||
#define DESC_STR_MAX (20)
|
||||
static uint16_t desc_str[DESC_STR_MAX];
|
||||
|
||||
uint8_t len;
|
||||
if (index == 0) {
|
||||
desc_str[1] = 0x0409; // supported language is English
|
||||
len = 1;
|
||||
} else {
|
||||
if (index >= sizeof(usbd_desc_str) / sizeof(usbd_desc_str[0])) {
|
||||
return NULL;
|
||||
}
|
||||
const char* str = usbd_desc_str[index];
|
||||
for (len = 0; len < DESC_STR_MAX - 1 && str[len]; ++len) {
|
||||
desc_str[1 + len] = str[len];
|
||||
}
|
||||
}
|
||||
|
||||
// first byte is len, second byte is string type
|
||||
desc_str[0] = TUD_DESC_STR_HEADER(len);
|
||||
|
||||
return desc_str;
|
||||
}
|
||||
|
||||
#if defined(MCU_SAMD21)
|
||||
|
||||
void USB_Handler_wrapper(void) {
|
||||
USB_Handler();
|
||||
tud_task();
|
||||
}
|
||||
|
||||
#elif defined(MCU_SAMD51)
|
||||
|
||||
void USB_0_Handler_wrapper(void) {
|
||||
USB_0_Handler();
|
||||
tud_task();
|
||||
}
|
||||
|
||||
void USB_1_Handler_wrapper(void) {
|
||||
USB_1_Handler();
|
||||
tud_task();
|
||||
}
|
||||
|
||||
void USB_2_Handler_wrapper(void) {
|
||||
USB_2_Handler();
|
||||
tud_task();
|
||||
}
|
||||
|
||||
void USB_3_Handler_wrapper(void) {
|
||||
USB_3_Handler();
|
||||
tud_task();
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue